The was a silver coin of Catalonia introduced by the king Peter III in 1285 and minted at Barcelona, Perpignan and Tortosa. The term "croat" derives from the Latin grossus denarius, great coin, a common term for silver coins of higher value than pennies. Peter III was inspired by the gros introduced by Louis IX of France.
The was originally worth twelve terns of 25% silver billon. In 1340 the gold florÃÂn was introduced at a value of eleven . The purity of the florÃÂn was fixed at eighteen carats (75% gold) in 1365. As the popularity of the florÃÂn and the grew, the Aragonese empire settled into bimetallism. The Catalan was equivalent in value to the Aragonese ral (which went by many names: grosso, real, alfonsino, anfusinus). It was the most stable of all the Aragonese coinage and widely used in the Mediterranean trade.